Device for making aqueous solutions of chlorine



DEVICE FOR MAKING AQUEOUS SOLUTIONS OF CHLORINE Filed Nov. 17. 1952 awryOrnsfez'n Hi foi /75y.

f, A further object of myinvention is the proably small, having forexample a diameter of liquid chlorine in water or waste water compristhewater entering the cylinder 2 from the top,

Patented June 12, 1934 1 UNITED STATES PATENT OFFICE DEVICE FOR MAKINGAQUEOUS SOLUTIONS OF CHLORINE Georg Ornstein, Berlin, GermanyApplication November 17, 1932, Serial No. 643,109 In Germany February 9,1932 3 Claims. (Cl. 23285) This invention relates to the manufacture ofof chlorine, to be added to the water in the pipe 1, aqueous solutionsof chlorine from liquid chlorine is a glass cylinder 2 which is closedat both ends and water or waste water and has for its main by covers ofmaterial resistant against chlorine. object to provide for a devicewhich is simple in The nozzle enters the mixing vessel through the 3construction and safe in operation. bottom cover. A valve 4 ispositioned in the tube 69 A further object of my invention is the pro- 3coming from any usual reservoir for liquid vision of an apparatus whichenables the conchlorine not shown in the draw nghe noz le tinuousmanufacture of aqueous solution of is the preferred form of means forfeeding liquid chlorine with a, uniform chlorine content, chlorine intothe cylinder 2. Its opening is prefervision of an apparatus whichenables the con- 1 mm. or only some few mm. The interior bore tinuousmanufacture of aqueous solution of of this nozzle has in its preferredform a conical chlorine without losses in chlorine. shape, the area ofthe cross section decreasing A further object of my invention is theprotowards the opening. However, also other means vision of an apparatuswhich enables a fast and for n due q d Chlorine Such as a tube may 7complete dissolution of liquid chlorine in Water. be employed. Throughthe bottom cover of the Still a further object of my invention is thecylinder 2 enters an overflow pipe 5 for leading provision of anapparatus for dissolving liquid chlorine solution formed in the cylinder2 to the chlorine in water without disturbance by formap p and rmaintaining the liquid v l in t 0 tion of chlorine hydrate. cylinder ata desired predetermined height, leav- 75 It is known to dissolve liquidchlorine in water ing in the y nd 2 a q d free pace between or wastewater for water purification purposes the liquid level and the lowersurface of the top by mixing water and liquid chlorine in a vessel CovTh the t p Cover Of the y e 2 provided with means for a continuous feedof e s a Water feeding tube 3 p v d With a 5 water and liquid chlorineand with means for a Valve 6. Just below the top cover in the space SQcontinuous removal of the aqueous solution of between the q d ve and thetop cover in the chlorine from this vessel. In this known method y d 2is arranged an nj ctor 7 in the Water water and liquid chlorine are fedto the mixing feeding u 3, W ch tube 8 extends into the vessel in thesame direction of flow. The dissoluliquid in the Cylinder When the pp aus is in tion of the liquid chlorine in the water is irregular p a nandincomplete, considerable amounts of undish described apparatus p ates asfollows. solved gaseous chlorine and crystalline chlorine he valve 6 isopened and water introduced hydrate being formed, which hydrate oftentends t ou tu 8 o he ylinder 2. When the to close completely or in partthe aperture of the Water level in the cylinder 2 reaches the heightfeeding tube for liquid chlorine. The concentra- 0f the v fl p p 5eXCeSS Water W through 90 tion of the chlorine solution obtained by thisp p 5 into the main Water p p through Wh ch known process is notuniform. the water or waste water to be treated flows. All thesedrawbacks are avoided by the inven- Valve 4 is then opened and liquidchlorine enters tion which consists in an apparatus for dissolving thecylinder 2 from below in counter current to ing a closed mixing vessel,into which the water thus effecting a thorough and quick mixing of iscontinuously fed from the top and the liquid water and liquid chlorine.Due to the release chlorine in counter current to the water from ofpressure taking place when the liquid chlothe bottom, means beingprovided for a conrine enters the cylinder 2 some gaseous chlotinuouswithdrawal of the solution formed from rine is formed arising slowlythrough the water said vessel. column in the cylinder 2. The undissolvedpart The annexed drawing shows schematically a of gaseous chlorineenters into the space above preferred embodiment of the apparatusaccordthe liquid level in the cylinder and is drawn ing to theinvention, for use in connection with a into the tube 8 by the injector7 driven by the pipe, through which water or waste water to be enteringwater, thus being mixed thoroughly with 5,;

purified by chlorine flows. water in which it is to be dissolved. Ifchlorine The water to be treated with chlorine flows hydrate is formedby the liquid chlorine enterthrough the pipe 1, which may be replaced byan ing the water through the nozzle, it is at once open canal or by astorage tank. The main part removed from the nozzle opening by theturbuof the apparatus for making an aqueous solution lent motion of thewater in the cylinder, which m,

2, supports its dissolution in the Water. The aqueous solution ofchlorine formed in the cylinder 2 is continuously removed from thecylinder by the overflow pipe 5, which leads it to the pipe 1 throughwhich the water or waste water to be treated with chlorine flows.

With the apparatus described 20 cbm of an aqueous solution of chlorinewith 0.5% of chlorine may be produced per hour, when the cylinder has avolume of 14 1.20 cbm. of water and 100 kg of liquid chlorine are fed tothe cylinder per hour, which shows that there is a very vigorous motionof the liquid in the cylinder.

From the above description it will be seen, that a complete dissolutionof liquid chlorine in water is obtained with simple means of small size.The chlorine solution obtained is of uniform strength and no gaseouschlorine may escape.

The foregoing detailed description has been given for clearness ofunderstanding only, and no unnecessary limitations should be understoodtherefrom, but the appended claims should be construed as broadly aspermissible in view of the prior art.

I claim:

1. An apparatus for the preparation of an aqueous solution of chlorinewhich comprises a mixing chamber closed to the external atmosphere, aninlet conduit for introducing water into said mixing chamber, a secondinlet conduit for introducing liquid chlorine into said mixing chamber,an outlet conduit through which the prepared solution is removed fromsaid chamber, said outlet conduit being formed with an inlet opening sopositioned in said mixing chamber that the solution in said chamber ismaintained at a predetermined level during the operation of the device,the space within said chamber above said predetermined liquid levelconstituting a gas space, and an injector in said water inlet conduit sopositioned in said mixing chamber that any gaseous chlorine present insaid gas space is drawn into said water inlet conduit by the action or"said injector.

2. An apparatus for the preparation of an aqueous solution of chlorinewhich comprises a mixing chamber closed to the external atmo's phere andformed of a material resistant to the action of chlorine, an inletconduit for introducing water into said mixing chamber, a second inletconduit for introducing liquid chlorine into said mixing chamber, anoutlet conduit through which the prepared solution is removed from saidmixing chamber, said outlet conduit being provided with an inletpositioned in said mixing chamber constituting an overflow pipe, so thatthe solution present in said chamber is maintained at substantially apredetermined level, excess solution being removed therefrom by means ofsaid outlet conduit when the solution tends to rise above saidpredetermined level, the space within said chamber above saidpredetermined liquid level constituting a gas space, and an injector insaid water inlet conduit so positioned in said mixing chamber that anygaseous chlorine present in said gas space is drawn into said waterinlet conduit by the action of said injector.

3. An apparatus for the preparation of an aqueous solution of chlorinewhich comprises a mixing chamber closed to the external atmosphere whichconsists of a glass cylindrical vessel provided with upper and lowerclosures, an inlet conduit for introducing water into said mixingchamber, said inlet conduit passing through said upper closure, a secondinlet conduit for introducing liquid chlorine into said mixing chamber,said second inlet conduit passing through said bottom closure, valvemeans in said second inlet conduit to regulate the supply of chlorine tosaid mixing char. ber externally of said chamber, an outlet conduitprovided with an overflow pipe inlet positioned in said mixing chamber,said outlet conduit passing through said lower closure and serving todraw off any solution in said mixing chamber when the level of saidsolution exceeds a predetermined level, the space in said mixing vesselabove said predetermined level constituting a gas space, and an injectorin said water inlet conduit so positioned in said mixing chamber thatany gaseous chlorine present in said gas space is drawn into said waterinlet conduit through the action of said injector.

GEORG ORNSTEIN.

